Drain strainer



Dec. 17, 1935. J RQSSMAN 2,024,475

DRAIN STRAINER Filed April 20, 1935 .7144 A TTORNE Y Patented Dec. 17,1935 UNITED STATES PATENT OFFICE Application April 20, 1935, Serial No.17,478

1 Claim.

My invention relates to improvements in drain strainers. It relatesparticularly to the type of strainers which are adapted to be removablyfitted in the outlet drain pipe of a wash bowl,

bath tub, sink or similar water container, and which is adapted toreceive the usual rubber drain plug.

One object of my invention, is to provide a novel strainer of the kinddescribed, which is adapted for use in diiferent styles of outletfittings, and which has novelmeans for being securely held in itsoperative position and without liability of its being accidentallywithdrawn with the withdrawal of the rubber plug.

A further object of my invention is to provide novel securing meansadapted to have holding engagement with the usual bridge or baflle inthe drain pipe, when the bridge or baffle is at diiferent distances fromthe inlet of the drain pipe.

Another object of my invention, is to provide a novel strainer, which issimple, cheap to make, strong, durable, not likely to get'out of order,which is readily applied to its operative position, which can be asreadily removed for cleaning, and which is efiicient in its operation.

vIn the accompanying drawing which illustrates my invention,

Fig. l is' a vertical sectional view showing my improved drainer inoperative position in the drain pipe of a wash bowl, portions only ofthe bowl and drain pipe being shown.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Figs. 3 and 4 are respectively top and bottom 35 viewsof the spiralspring.

Similar characters of reference designate similar parts in the differentviews.

My improved strainer is provided with a cup like body I, having in itsbottom small perfora- 40 tions 2. The upper end of the body I has adiverging annular flange 3 which is adapted to rest on the upper side ofthe bottom of the bowl 4.

The upper end of the inner side of the body I is slightly flaring, asshown, to conform to the periphery of the usual rubber plug 5, which isadapted to be seated in the body I, when the latter is seated in thedrain pipe 6.

For securely holding the body I in the drain pipe 6, while permittingthe body I to be revolved in opposite directions, I provide a spiralmember 5 I, which, preferably, is a coil spring, the upper end of whichis fastened in any suitable manner, as by a screw or rivet 3, to thecenter of the bot tom of the body I.

The coil spring 1 extends downwardly a dis- 10 tance sufficient for ittobe extended past and to be screwed into holding engagement with theusual baffle bridge 9 with which the drain pipes of this type arecommonly provided.

In applying the strainer to a container, as the 15 wash bowl 4, thespiral spring I is inserted into the drain pipe 6 and the body I isinserted bottom down into the drain pipe 6 so as to be seated thereinwith the flange 3 resting on the upper'side of the bottom of the bowl,the body 20 being rotated in a direction such that the spiral springwill be screwed into holding engagement with the bridge 9. When the bodyI is seated, the spiral spring I will releasably hold it in itsoperative position, against any pulling effect caused 25 by withdrawalof the plug 5.

When the strainer is to be removed for cleaning, it is revolved in theopposite direction, thereby unscrewing the spiral spring from engagementwith the bridge 9, thus releasing the strainer so that it may beremoved.

Various modifications of my invention, within the scope of the appendedclaim, may be made 7 without departing from its spirit.

What I claim is:- A drain strainer having a perforate cup shaped bodyadapted to be removably fitted in the open upper end of a drain pipehaving a transverse bridge below and spaced from said end, said bodybeing adapted to have a stop plug removably fitted therein, and a spiralmember attached at one end to and extending below said body and adaptedto be screwed into and out of holding engagement with said bridge.

JESS ROSSMAN.

